The world's longest collapsed


  • 1 rivers
  • 2 The longest rivers in the world
  • 3 The importance of river water
  • 4 References


Rivers are small streams of steep water flowing from the tops of mountains or hills, and small streams of water combine to form a large river that eventually flows into a specific lake or sea; [1] where the streams of water are branched and each stream is called a tributary, and when they meet with each other they form a river Its size depends on the number of tributaries that make up it. As for the sources of river water, it is rainwater that flows directly into the land or melted snow water or ice. It can also be a source that pushes water from the ground outward, [2]

The amount of water in the river changes due to the difference in the quantities that enter it and the quantities that come out of it during the period of rainfall, in addition to the amount of running water on the surface of the earth, the amount of groundwater, and the rate of water flow from the tributaries of the river, all of these factors have an effect on the change of the amount of water River, as individuals use river water to meet their daily needs, and river water retains only 0.006% of the freshwater around the world. [3]

Rivers are classified into multiple categories according to specific measures. These measures are: [4]
  • The rivers are dependent on the nature of their water flow. The rivers are divided into permanently flowing rivers, interrupted rivers, and temporary rivers.
  • The rivers are dependent on their system or the method of draining the river's water and the periods in which the amount of drainage is large and which causes flooding, or small causing the Zionists, which are simple system rivers, dual-system rivers, and rivers with a complex system.
  • The rivers according to their level, and what is meant by this is the classification of rivers depending on the beginning of their sequence in the formation of its riverbed, and the arrangement of the river gives a picture of the amount of runoff in it, and the higher the level, the greater the amount of water in the river .

The world's longest river

  • The Nile River: It is the longest river in the world, with a length of 6,650 km; that is, about 4,130 miles. It flows from northeastern Africa and passes through Sudan and South and Egypt, and it is the main source of water in them, as it passes through Ethiopia, Burundi, Rwanda, and the Congo. Tanzania, Kenya, Uganda and Eritrea. The Nile is called the River Abi in Africa, where it rises south of the equator, originates from the north and across northeastern Africa to end its course in the Mediterranean Sea and flow into it. [7]
  • The Amazon River: It is the second longest river in the world, with a length of 6,400 km; that is, about 3,976 miles. It is shorter than the Nile River by a very simple distance. The Amazon River is located in South America and is the greatest river in it, as it is the largest river in the world in terms of The volume of water that is drained, and its source from the west is the Andes Mountains. As for its mouth, it is located in the Atlantic Ocean on the northeastern coast of Brazil, and its basin passes through large parts of Brazil , Bolivia, Peru, Colombia, Ecuador, and Venezuela. [8]
  • Yangtze River: Known in Chinese as Zhang Jiang, it is the third longest river in the world , and the longest river in China and Asia, with a length of 6,300 km; that is, 3,917 miles. The river passes between 10 provinces of the Tibetan Plateau to the East China Sea, and more than three quarters of its flow It is located between the mountains, and it contains eight main tributaries. [9]
  • Mississippi River: It is located in North America, and it is the longest river in it, and its length is 6,275 m; that is, about 3,902 miles. Its tributaries occupy approximately one third of the continent with an area of ​​1.2 million square miles. It originates mainly from the United States of America and rises to reach Canada with a flow of It is 98.5%, and 1.5% is in the Gulf of Mexico. The river crosses parts of 31 American states and two provinces of Canada. [10]
  • Yenisei River: It is one of the longest rivers in Asia, and one of the largest rivers flowing towards the Arctic Ocean, where it is the sixth among the rivers of the world in terms of water drainage, mainly from Russia is 97%, and the rest are from Mongolia, and flow into the Kara Sea As for its length, it reaches 5,539 km; that is approximately 3,445 miles. It extends from south to north through Siberia, covering large areas and distances, and traversing many natural attractions. [11]
  • Yellow River: It is also called Huang Ho, and it is located in China, which is the cradle of civilization in it, and the main river of the northern part of it and east and central Asia, and it is the second longest river in China after the Yangtze River, where it reaches 5,464 km, or about 3,395 miles, so it occupies that time It is the sixth among the rivers of the world . As for its drainage basin, it is the third largest in China, with an area of ​​290,000 square miles. [12]
  • Obi River: The Obi or Obi River is located in Russia, and it is the main river in it and one of the greatest rivers in Asia . The Obi River is 5,410 km long, or 3,364 miles. [13]
  • Parana River: It is located in South America, and it occupies the second position after the Amazon River , and its length is 4,880 km or about 3,032 miles, and it flows through the southeast of Brazil, Bolivia, Paraguay, and northern Argentina, and the river is also known as Alto; that is, the upper one, and it has three branches or Important tributaries are Titi, Iguacu, and Paranabanima, in addition to three sources close to the coast of the Atlantic Ocean in the southeastern part of Brazil. The Baran River formed waterfalls as it passed between the mountains, which are Guaira Falls; however, it was inundated by the Itaipu Dam which was built in the early eighties . [14]
  • The Congo River: It is located in Africa, and it is the deepest river in the world, where its depth exceeds 220 meters, as it is the third in the world in terms of the volume of water that it spends, and its length is 4,700 km; that is approximately 2,900 miles, which is the eighth in the world Where length, as it is the second after the Nile at the level of the continent of Africa, and was previously called the River Zaire, the river passes over the heights of northeastern Zambia, then rises above sea level at a distance of 700 km from the Indian Ocean, then counterclockwise flows through the south, southwest and northwest Poured into the Atlantic Ocean in the Republic of the Congo, in addition to its passage through northern Mongolia Cameroon, Tanzania. [15]
  • Amur River: It is located in Asia and has a length of 2,824 km; i.e. 1,755 miles. The Amur River is located on the border between the easternmost part of Russia and northeastern China. The Amur River is the longest river in eastern Russia, and it passes through Siberia and Mongolia, and it forms a large part of the borders It is between Heilongjiang Province in China and southeastern Siberia, and its original name is Heilongjiang, which means Black Dragon River. [16]

The importance of river water

Rivers have great importance in life on the surface of the globe, since life has been based on ancient rivers, whether for drinking or irrigation and agriculture, as they are used to generate electric energy, move machines and transport them, and help rivers to keep the underground layers of the Earth's surface full of water, as it is used Rivers to get rid of waste; [3] However, this takes place without taking into consideration that waste has a significant negative impact on river life, as dumping waste in rivers leads to deterioration and pollution of aquatic life in it, which leads to change in it and the replacement of other types in its place. [17]